<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>原始html 演示</title>
</head>
<body>
你好
<button>这是一个按钮</button>
<br>
<img alt="" src="1.jpg">

<a href="https://www.baidu.com/">百度</a>

<h1>最大的标题</h1>
<h2>h2的标题</h2>
<h3>h3的标题</h3>

<select>下拉框
	<option>选项1</option>
	<option>选项2</option>
	<option>选项3</option>
	<option>选项4</option>
	<option>选项5</option>
</select>
</body>
</html>